Flex Builder 2

Honestly, who was the genious at Adobe/Macromedia who decided to build the Flex Builder 2 IDE on a Java Application (Eclipse). Has anyone ever had a good experience with a Java based IDE on any platform? I love coding in an IDE, the debugger is the single greatest thing ever. But, having the program crash all the time, and have it become permanently inoperable after the latest crash has just made me wonder why they didn’t take the time to create a tool for developers that was actually usable. I mean it’s mainly just a text-editor, why was it necessary to put me through the torture of running my IDE in a JVM!?